All confirmed
I gave Ovi Store a try yesterday on my E71, and unfortunately I have to confirm all concerns that Bill has in this review. Application is quite slow to navigate, UI is not very intuitive and well thought-through, and selection of apps is rather poor. After seeing Android Market for a first time just few days back, I cannot be impressed with Ovi Store at all.
But, at the end of the day the success mostly depends on developers and their willingness (or not) to publish their apps through it... Time will tell.