Don't hesitate to set the global SS. Elite feels like a different game with it enabled. Hell, my steam VR backdrop looks dramatically improved (I'm using the 360 shots from Curiosity). Based on my limited testing so far, It seems that as long as you're conservative with the value you use, the global SS is just improving quality in every game I've tried (hover Junkers and SPT so far).
I did just after posting, and even with such a slight amount as 1.4 made considerable impact to the sparklies, hyperjumping for instance didn't feel like mooshing my face up against a the old windows 3.1 screensaver.
Also seemed to produce better quality image than setting ingame SS to 1.5 with less of a fps penalty. Fps might just be a slight problem since I'm seeing quite a bit of ghosting when things go hectic, although I have adjusted settings a fair amount higher than VR high, particularly for terrain quality and super cruising near landable planets seemed to give a few rather jarring stutters, but once on surface no problem.
(texture loading I assume)
Rift user here (DK2 for a year, then CV1 since May)5930k at 4.4, launch era GTX980, 32GB ram. I run all settings at maximum and don't have any issues. Since the release of Oculus SDK 1.0, I don't even have to lower settings when driving the SRV . I do not use super sampling as I didn't really see a difference (aside from the added judder). I'd imagine the Vive performs the same?
Unfortunately no.
As it seems and although I have only had my vive since last Thursday the whole thing screams high end BETA PRODUCT, I'm having drift issues with the controller. And so far not a day has passed that I haven't had to recalibrate all the things or reboot the device to fix something getting hinky.
Most gaming sessions are ended when something or other crashes or simply stops working

But I do love it, and the room play games with it so I usually keep playing until something does stop working cause it is brilliant fun.
But right now, as it stands, I am getting tempted to take advantage of my 45 day return policy and just waiting or getting a rift...
On the other hand, SteamVR has room for a lot of improvement and I'm sure they will, so given just a few more months and things might be completely different....
I certainly don't mean to bum out your thread, but this is where I'm sitting, it just might also be I have a dodgy unit (it has a few stuck green pixels in both displays)