Hi
I do consider getting a 630. Or more exactly, for my wife. We often go to FInland and have a dedicated FI SIM. When in France, she uses her FR SIM with a Nokia N8. So we were looking for a dual sim device, a Nokia one (she's a Finn, I'm a Nokia fan, full stop
). Dual SIM would allow: one device (with all contacts/messages) to care (we used to have a dumb phone for the FI SIM when in France as some friends still use that number instead of the French one) AND 3.5G to WLAN tethering.
The Nokia X was my main option but hey, the 630 is much better. Same design, same missing features, but at least, it gets 4.5" screen and above all WP8.1 instead of Android-without-the-look-n-feel-of-Android. I have recently switched from the Nokia 808 to the 1020 and am convinced by WP8, so the 630 sounds really perfect as an upgrade for my wife.
Now I have to convince her