Mike, can you manage your back on your own with no help?
Yes, both with Quicksets, Mios and the Silhouettes I've used for most of my time on pump. I've not used Mios much, but used the same sites when I tried out all the set types.
The Silhouette inserter looks a little unwieldy, but it's easy enough to push the button on the end, then reach around, hold the set and begin to unpeel the sticky patches. The only trouble I have is when I mistakenly insert rather too close together (because I can't see), don't check sufficiently, and end up with new sticky on top of old sticky.
Then I just have to get someone to help unpeel, lift the old set adhesive and stick the new one down again.
Actually it's only the last 2 of my sites in each row that need much twisting around at all. And I've a mirror on the wall to help me see what I'm doing