The 40 and 9mm are still the top LE caliber. The 357Sig and 45GAP are niche calibers that I would bet will fade away like so many others before it.
We can only hope.
Personally, I find the 9x23 Winchester a far superior round to either the 357 Sig or the 40 S&W. The case is 0.035 inches longer than the proprietary Sig round and 0.05 inches longer than the 10mm Short. It fits fine in a grip the size of a 1911, but is probably a tad too long for the smaller 9x19/357 Sig frames. Even so, compared to a 357 Mag or 45ACP, it is much more pleasant to shoot.