I eventually changed my Arc S for a second-hand Nokia E7.
When I showed my wife the phone and why I got it, she laughed and
called me an old man...
Anyway, after taking over the phone, I immediately wiped the phone
clean from its original condition. However after the wipe, I was
unable to access the Ovi store at all.
But after getting home and installing Ovi Suite to reinstall Belle, I
managed to get back and upgrade Ovi Store.
My first impression was that the difference between the app stores is
starking. If Android's a sea, Ovi's is a desert.
Will write more later as I customise the phone.