I am moving to Blackberry OS 10 also; specifically for a Blackberry Classic because the qwerty keyboard.
I thought about buying Jolla but I want physical keys and a keyboard; and I don't want to buy and test an external keyboard done by 3rd party; why jolla is not supporting and selling this TOH accesorie?

It is a pity that jolla has not more devices because in my opinion they have an OS and TOH feature which is a good alternative to the main stream but physical interface seems to be following the rules of apple and android phones, such as a screen without edge protection (too easy to break) , no keys(only for volume?) and a lack of keyboard.

If bicycle brands are selling road, mountain, bmx,..., and there is market for all. Why all mobile phones have the same frame and wheels?