My dock and roxfit arrived today, after much research I felt the roxfit would be the best for me so ordered one on Sunday.
Works a treat, I have no fear of the adhesive doing any damage. Fits perfectly into the dock very tidy with the cover pinned behind with the magnet.
It is almost the prefect case for me, its only fault is that it tends to slide down if you try and get to much angle on the screen which is a shame, however if you keep it quite upright it works perfect and it's very strong.
Really impressed with how light and tidy this case is, may just look at modifying it to help hold the screen at a lower angle in future if I feel I require it.
Thanks for the help and advice
Xperia Tablet Z SGP311 | ROM: Stock 10.3.1.C.0.136 Android 4.2.2 | Not rooted... Yet
Xperia T LT30p | ROM: Deodexed & Rooted 9.1.A.1.145 Android 4.1.2 | Kernel: 9.1.A.1.145 | Bootloder Unlock: Yes