Several times in UC... I definitely prefer it to a BA 777, although upstairs in 62A/K on a BA 747 is probably still my preferred way to fly...

VS UC is intended I think to be a hybrid of First and Business so the set up is more private than BA and avoids the problem of climbing over a sleeping passenger in the aisle seat. You can't really speak to your neighbour from a sitting position. (possibly a bit easier if they are across the aisle and you don't mind others hearing your conversation!) However, the footstool is also useful as a seat when you want to have a chat mid-flight... Or even better, head to the UC bar for a chat and a G&T...