In reply to Ade Keir:
10.5mm is the most common (semi) static rope diameter you can get, I’ve got a 2023 Lov2 and it runs fine on it. I used a Lov3 on a someone’s old 11mm and it didn’t run as smooth as I’d like.
A few things to know about the Lov2/3 before buying - the Lov2 is still available, it now uses the same cam as the Lov3 but is cheaper. The Lovs are big bulky devices, if you use one with a chest harness it will get in the way when trying to get close into the rock on technical vertical climbing. If you use it trailing, just clipped into the belay loop (as I prefer) then, because the handle faces towards you, there is a risk of the handle either getting caught on your trousers, or worse getting caught under a harness leg loop, which then stops the device camming and arresting a fall. I also recommend filling down the back corner of the plastic cam so it can’t accidentally be locked out.