Been looking into those "2-in-1" systems lately, but I noticed that a couple of them say they run Lollipop on Intel Atom processors. What's wrong with that? Well, the only actual files I've seen of Opera for Android all say "ARM" in the name, so I gather that Opera for Android is not available for other processors ... including Intel.
Opera for Android runs normally on x86 ("Intel") but the apk isn't available in the FTP, it's only in the Play Store.
Seems to work other than Sync ... that and crashing twice. Sync says it has logged in, but hasn't done anything. No idea on the crashers.