Maybe. How long does it take to zip-tie the plate on? The suction cups are meant to be a 5-second solution when I find myself in need of some front-plate insurance while parked. The idea is to avoid fiddling with anything that'll take long or require any precision (or difficult to do at night without good light).
But I don't even know if the suction cups will work or if the nose cone on the MS is too curved for all four corners to stick at the same time. I'll let you know, you might be right and I'll have to go for the zip ties instead.
The zip tie option wouldn't take long at all since you just stick it through and pull. I guess the trick is to get a zip tie that isn't too short or it could get awkward in the grill. Then just keep a pair of sharp scissors I guess to cut off the excess zip tie.
But I don't think it would take long at all. I practiced putting in the J-bolt and that does take a few minutes to find the best grill spots but you can mark the best grill spots with a piece of marking tape so you know where exactly to put it in and out.
I still can't decide if I want to keep the front license plate on all the time. My wife just told me the plates came yesterday in the mail. I didn't see them. My car is in service but I guess you have 60 days in CA from the time you bought the car to put them on. So maybe I'll just wait. I ordered vanity plates that I'm waiting on anyway and my HOV stickers didn't come yet anyway.
I have been driving in the HOV lane without the stickers and I've passed cops 3 times on I-15 and I-5 and I didn't have anyone else in the car and they never pulled me over. I figure every cop knows a Model S by now. One even gave me a wave.
I did see a Model S in Del Mar today parked in front of the Poseidon restaurant that had the ugly HOV stickers on them.