Not
@ohmman. But I do have a Bowlus Road Chief 24'. [baddadjoke]And I did stay at a Holiday Inn last night [/baddadjoke]
tldr
You'll be fine with either one
Long version
I'll start with we love our Road Chief. We've probably put 10-15k miles on it over the last two years. We'll put another 8k miles on in next year. We've met other owners who have put two to three times that mileage on it over the last five years.
In terms of 24' vs 26' I think you hit the main differences. Bigger bathroom is nice. OTOH we both shower in the 24' footer and find it functional.
The outdoor storage also is a nice addition. OTOH there is a ton of room in the MX. We use the frunk and under the back compartment for transporting outside/dirty stuff. I also have an
X-Rack | A new cargo solution specially designed for the Tesla Model X in the back compartment. Mostly serves as a shelf. But gives the option of carrying stuff when the trailer is not hitched.
Bells and whistles stuff (Lithium, bluetooth, etc) are nice touches. If you plan on boondocking a lot then lithium makes more sense. If mainly going to campgrounds with hookups then not as big a deal. We've gone 5 days/4 nights off grid with the standard lead acid battery. Probably could go a little longer if we didn't have to run the electronics for the propane heating (it was in the 30's at night).
Same with A/C on lithium. Nice touch. But if it's so hot you need A/C you might need it for more than four hours. Better to just travel where you don't need A/C or have access to plugging in to run A/C full time.
Finally consumption. As I mentioned in the other thread you might want to see about a demo run loaner. Short of that here are my best guesses on consumption. Numbers are based on flat terrain, good weather, 20" wheels, and 55mph.
We get about 170 miles range with our 90D. That translates to ~470wH/mile. For a 100D that same 470wH/mile would give a range of 205 miles. I believe the Airstream owners are reporting consumption of 575wH/mile and ranges of 140 miles and 170 miles (90D and 100D respectively).
Even though longer than the Airstream, the 26' Bowlus is still lighter, shorter and narrower. I would think that using an estimate that splits the difference would be pretty safe. So say 525wH/mile. With a 100D that's 185 miles range.
If you worried about range I think you'll be fine with the 185 miles. As an aside we were in Newfoundland for 2 months. No superchargers. Basically campground to campground charging. We made it without any issues. So if you're planning on travelling the Continental US and Canada you should have no issues.
The biggest difference with pulling a trailer is pace of travel. Keep it under 62mph. Plan on more frequent charging stops (we usually stop every 2-3 hours). Plan on slightly longer charging stops. Plan on shorter days on the road (we've gone up to 500 miles in a day with the trailer, but usually prefer less than 200 miles). And plan on staying at locations longer. Unless we are just using a campground as an overnight charging location we prefer a minimum of 3-4 nights at any location.
If you have any more question please see the blog link in my signature. Or feel free to reach out.