Using his suggestion, you can just unplug your Mobile Connector from the Tesla 10-30 adapter plug, and take the Mobile Charger with you. I'd recommend disconnecting the cord from the Mobile Connector itself, rather than at the wall plug, as wall receptacles have notoriously short plug/unplug cycle life. The connection method that is used to connect the cord to the Mobile Connector is much more robust than the prongs used on the 10-30 end of the cord.
Um, however, I would not recommend this for a couple of reasons.
No, the connection method is not more robust there. It's still metal to metal spring tension. The pin-in-sleeve form factor still has the same issue of spring tension and metal fatigue that would cause it to eventually become looser over time from a lot of plugging and unplugging.
1. By leaving that plug adapter in the outlet, but disconnected from the mobile connector body, that brings the live 240V connections out of the wall and dangling where they can more easily be touched. I haven't looked really closely at the Gen2 mobile connector adapters to see if they are somewhat surrounded by plastic to make them a little less likely for someone to accidentally touch them, but I think that is still going to be inherently more dangerous.
2. Really? You would put the wear and tear and weakening of a plug/spring connection onto the device that costs 10X as much? That seems ridiculous. Replace the outlet every 5 or 10 years if you want. That's much better and cheaper than wearing out and weakening the plug connection in the mobile connector electronics box.
There are several products out there (one that comes to mind is The Dryer Buddy) that will split your clothes dryer circuit into two 10-30 outlets. I've read that people have had both great and not-so-great experiences with them, so make sure you research them a bit before buying. Using such a thing would allow you to leave the Tesla 10-30 cord plugged in all the time, so you can just disconnect the Tesla Mobile Connector at the Connector end of the cord, and leave the 10-30 plug end plugged into the outlet all the time. Always remember to not charge your car at the same time you run your clothes dryer. Most of these type of products (possibly all of them), have some sort of "idiot proof" safety built into them to prevent this from happening, but nothing is ever truly idiot proof (it's amazing I'm still alive, really).
Ah, the infamous Dryer Buddy. I have a strong opinion on that. I think it's irresponsible that their basic product they advertise does not have that kind of toggle. People need to know which one is the good and safe better version:
1. Basic Dryer Buddy (not recommended). This is just a straight "Y" kind of splitter. Both sides are always hooked up, and you would need to make sure not to use both sides. Just not a good idea.
2. Dryer Buddy PLUS -- This does have a toggle switch for the safety of making sure only one side can be used. Safe, but cumbersome to have to remember to flip it back and forth.
3. Dryer Buddy PLUS AUTO -- This is the one I can recommend, where it has the sensing to detect and lock out the other side based on what is being used.
This forum is rife with stories of guys wearing out the 10-30 female plug in their home, and getting either really hot receptacles, reduced charging, or both. Luckily, I haven't read of a house fire started this way... yet. This is why, IMO, it's important to reduce the number of times that you plug/unplug the actual 10-30 end of the cord as much as possible.
Well...yeah, there was more of that with the Gen1 UMC. I was very please and impressed that Tesla put a temperature sensor in the plugs when they made the Gen2. I've seen some threads from that, where the car stopped or reduced charging from detecting the outlets getting hot. So I am not as concerned about that issue as much now.
But this also brings up my other opinion. I think people are way too focused on always "needing" a charging cable in the car every day. Really, are you going to be going over 200 miles in a day driving around town? It's fine to just leave your charging cable at home hanging on the garage wall instead of plugging and unplugging it every day, so you don't need to put extra wear on any of those metal connections. Take it with you a few times a year on trips if you want.