What do you guys think about shoulder rigs..

I had one a few years back when I was riding a lot, just a cheapy. it was Ok..

But I'm thinking, with this winter, and probably going to be in suits a lot more at work.. yes it sucks... it will probably work better for me.

I just run into problems carrying IWB w/ a tucked shirt and a jacket, I haven't practiced drawing enough removing a shirt and clearing a jacket..

Any of you use a 'good' shoulder rig?