Hi Steve, hope you're well and we do need to go for a ride soon.
I have purposefully not commented on the TT seat, as I've only done 1 hour stints on it so far. Judged on that I am more than happy. Sheepskin in todays rain would have been a pain, so more versatile.
Its harder than stock, flatter and wider at the back, and this all helps. I'll take some pictures tomorrow side by side, and perhaps this will explain why its better, well for me anyway. I can honestly say that its put the pleasure back in riding my XTZ. Its always a turmoil getting a big item like this and not knowing wether it will work.
It does for me. And I'm sure when it comes to selling, I'll have enough others agreeing with this. So far no downs as far as the seat is concerned.

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2010 XT660Z Blue, Exan can, UFO high front fender, SW Motech baseplate, heated grips, 12v point, Kevs Fuel & O2 mod, DNA Stage 2 Filter and cover, Givi tall screen, Mefo mfe 99s, Kevs throttle mod, TT high seat and 'compass'