IMO, dropping the 97 was a stupid move. CZ should have updated the model, pic rail, threaded barrel. I have 3 CZ 97s and 2 spare slides, I prefer them over the 1911. 45 ACP is an absolute joy and pussy cat with a 97.
But, one thing people don't know, CZ is a major player in gun competitions overseas. A lot of their designs revolve around those games and their different rules.
Supposedly, the reason the SP01, the slide over hangs the frame just slightly is because guns with full length frame rails were prohibited. So CZ cut back the frame slightly and the SP01 and S2 over bite was born.