Locking up is, so far, taking a little extra work to do, primarily because I have to get down low to thread the lock through the shortest distance rim to rim in order to get a comfortable amount of length to wrap around a pole and work the ends together to lock.

It hasn't been a big deal, and I've only locked up a trio of times thus far, so I'm sure it'll become automatic once I get used to it and more proficient with selecting locations and bike orientation.

I do think wheelbase length needs to be considered before buying the lock, but for me, as I said in the OP, I don't really need high security, and so leaving the front wheel unsecured if it proves faster and easier is acceptable to me; at least that's how I've been doing it for years now. I usually lock up in high traffic, visible locations during the day, so I've been willing to roll the dice and consider those low risk.

Regarding the solidity of the mount straps, no noise or vibration at all. The forward strap I pull snug to apply tension, and the rear straps down snugly right against the frame, so there's no wiggle or anything. It's simple, but works.