Yes, we migrated our 6 CAD users to Varidesk (which i always misspell as Veridesk) and use the daul and single
monitor arms for 3 displays. Varidesk's do shake a bit... don't have anything else to compare to (advocated, yet
not in the purchase loop). Upon using now, there is a great comparison write-up on topic and some
alternative's beyond Varidesk that would be worth consideration.
http://www.workwhilewalking.com/varidesk-pro-reviews-standing-desk-converter#gsc.tab=0
On the Varidesk support site, found a comment / post regarding using the dual arm up to two-27" displays.
I use 2-24's per spec.'s below, and since over 5 years old now trying to budget and look into possibly moving
up to 27" displays, yet would have definite concern's on stability and even if the width would work side-by-side.
Obviously, one would want to look into very low profile options and the overall dimension / spec.'s of any 27"
display thoughts, as the 24's (noted below) seem to already work nicely.
Happy to post any pic.'s for reference, as we have a everyone else (5 users) with the square option, and I'm the
only one with the corner option. Any we have some users that didn't go with the arms as well.
As for self, standing position only used and have a couple users that move up/down every few days or in
moon cycles !!
Nice post... 
Geoff T.
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