once I got the knack of using the drop channel
This is important. I used to be ham fisted tyre changing numpty until I realised this. Now it's really easy.
Of course, there was once a problem with schwalbe tyres and stans rim. So I guess anything from that era (~2 years ago?) might still be problematic. I think schwalbe made the tyres a bit smaller to help seating and at the same time stans made the rims a bit bigger.