Do you see more DA/SA at matches beyond local?
I have seen a couple of CZ's, both gentlemen that had them shot them very well, one had come down from SD.
I have seen two HK's and only once saw another person with a Sig.
I think think the price point discussion has merit, but as I shoot more striker type handguns I can see another case being made.
Most people don't shoot Sigs or HKs at higher levels in USPSA. (Not unless they are sponsored by those companies.)
CZs in particular, though---yes. Many, many people shoot CZs at higher levels.
In 2011, 7 of the top 16 at Production Nationals shot a DA/SA gun, with 6 of those being a CZ. (And one Beretta.) In 2012, 9 of the top 16 shot a DA/SA gun, 6 of which were CZs, one Beretta, and 2 Tanfoglios.
In 2012, the rest were: one Glock, one XDM 5.25, 3 M&Ps, one Caracal, and one HK P30L.
In the past several years there has been a larger number of people switching over to custom CZs at higher levels. Striker-fired guns still have a huge following, but people are seeing GMs win with DA/SA guns, and the trend gets followed.
Now, as to whether or not that has anything to do with the GUN is a different question.