Which Holster and Case

I have a Sig 228 and I am in the market for a Consealable Holster that will fit behind my back. Know of any good ones? I did find Tuck-This holster....What are the pros and cons of this holster?

I am also looking for a gun case to transport/store my pistols. I have 3 and would like to keep them in one place. I like the hard plastic case but do you have any suggestions.

Thanks for the advise.