I Recently stumbled upon Ink by zurb. It looks promising but I wanted to ask if anyone has (or currently is) using it in their emails? Has it sped up your development process? And have you ran into any kinks with certain devices/OS that aren't mentioned on their site.

If you haven't heard of it here's the link. I haven't had a chance to use it but looking through the documentation It reminds me a of twitters bootstrap in regards to the column and grid structure.
http://zurb.com/ink/

Thanks for the replies!