Lars, I sent this to you via PM, but thought I'd post it here for others who are looking at these skis
You are certainly a strong enough skier for the tenex -- and it takes a strong skier (technique wise, not strength wise). It is unforgiving when you are out of position on it (especially in the backseat), then it is hard to control. When you are in the right spot balance wise, it holds and edge and is stable like no fat ski I've ever been on (or midfat for that mater) -- only racing skis have better edge hold (this is basically a mass-market-level racing ski made wide). It is a little more work than last year's XXX, but performs better when you are on top of it.
My only hesitation in recommending it to you is last year in our on-slope talk of skis it sounded like you preferred damp skis to more lively ones. The tenex is more on the lively-end than the damp-end of the spectrum. This is not to say it is unstable (it has a VERY high speed limit), but it gives you a lot of feedback (not chatter, but you do feel a crispness that is softened-up more with the XXX and I suspect others boards).
If you can demo, that would be the way to go as these issues are very skier-specific.
Also, this year's XXX is a complete redesign from last year's, so I know nothing about it. I have heard it is higher performance than the old one (which typically means that it is less forgiving of bad body position, but is more stable and holds better when you are on top of it -- like the tenex!).
For a damp, and very fun fat/west-cost ski, you should look at the Volant Chubb.
...and hey, last year was only my first year tele skiing -- this year I expect to pick up the speed with you guys in Fernie!