I'm a week into using the Flashbang as my primary holster and for the most part I really love it. Now that I've figured out a system for getting dressed and holstering my gun, it only takes an additional thirty seconds or so to get dressed.
1) I'm developing a raw spot on Ms. Left from the edge of the holster. I'm wear it tucked deep into my bra, so the edge of the holster rubs. I need to just get some moleskin, but it's a lot harder to find than I remember it being. I might have to resort to ordering it from Amazon.
2) I've found that after about 13 hours (the length of time I'm at work), it starts to get uncomfortable. Well, not the holster so much, as the whole bra. If I'm honest with myself, 13 hours is about how long I can tolerate wearing a bra, so I don't know that I can really blame the holster for it.
I'm still in the market for an IWB holster for jeans day, but I think I can hold off on spending that money for a bit, as long as I continue to dress around the Flashbang.
One other note: a couple of years ago, I did a review on a leather holster and I was disappointed when the snaps gave away and the holster started flopping. Holy cow, if that leather maker had used the same snaps that Looper does on the Flashbang, the leather holster would not have budged! The snaps on the Flashbang are ... sturdy. In fact, if you don't get the technique down, you're not getting the snaps done or undone.