Saw a couple in my LGS this afternoon. I'll be honest and say right off the bat that I don't like Blocks, that being said the only purpose that I can see for a .380 is the small size and the block ain't that small.

Discussing manufacturer's and calibers is like discussing Harley Davidson vs non or Ford vs Chevy vs Mopar. Difference of opinions and all are valid.

My choices, likes, and dislikes are validated by need and what I've seen come through the range in the past 20 years. There are some manufacturer's and calibers I will never ever get or carry.
As been mentioned by others I'm also not a .380 fan. I'd rather carry a .38 that a .380 and I do. I'm also not a fan of pocket guns. I only carry a smaller gun as back up. To me they're OS guns.
To that end, if and when Glock makes a slim 9 I will be picking one up.