I've had a Proporta N800 case on order since the end of March, still no sign of it despite an email claiming that the expected delivery date was approx 13th April :-(

Since I ordered it, I've been wondering whether the magnetic clasp might upset the SD door detector as they will lie very close when the case is fastened. With the N800 back cover removed, placing a similar clasp from another case (not Proporta, though) on the screen of the N800 was enough to trigger the "Memory card inserted" message, albeit briefly. However, with the back cover fitted, I did not manage to cause the opposite and with the real case the clasp will be a few millimetres further away (separated by the case's aluminum screen plate) so perhaps I need not worry.