My duty gun is a P228 and I love it.
The only other SIG I have any significant experience with is the P239, and I find the grips to be a bit too small. Also, if you're going to have a gun that's almost as big & heavy as the 228, why not have the 228 with twice the magazine capacity? Range day with the P239 is a pain in the arse loading at least twice as often... And double-stack magazines are slightly easier/quicker to index & load, to boot.
I find the P228 to be very concealable and comfortable to wear for several hours at a time. I can conceal it under an untucked T-shirt.
I actually find the grips even on the 228 to be a bit small, and have added Hogue monogrips, which I really like (except that they can stick to the cover garment and made concealment a little tougher).
One of these days I'm going to get me a p226.