These are both OWB - I also have a belt that matches the LCP holster - if I get a chance I'll try to get a pic of both together. I've only had the Flashbang for awhile and I'm still trying it on different bras. Learned early on that it must be an under-wire - had one ancient Victoria Secret that was kinda played out (not from me, from time degrading elastic!) - so now I'm playing with different brands. Three main problems - 1st, the strap has an industrial strength snap that is almost impossible to open/close - so once I'm set up with it, that's it for the day. I actually have to bring a different bra with me if I'm going to the chiropractor so I can change before my adjustment because I just can't unsnap the holster. And laundry day gives a whole new meaning to 'Honey, can you unhook me?'
And 2nd, the snap itself prints thru my tops and looks very weird. So I replaced the strap with Velcro - not craft-store strength, but industrial strength. This has helped tremendously! It also gives the whole thing more support and lets me tuck it up right where I want it.
Third, when I tuck the clamshell under the bra, it makes the top of the bra poof out - so I look like I had a boob job - only they collapse on impact

I actually am trying to find a bra that is more padded on top than on the bottom, but I don't know if such a thing exists. I also have a bra ordered that is one size smaller to see if that helps.
So, I wear it it, but it is a work in progress. Usually after about 3-4 hours I need a break from it. But for quick trips to the store it's great. And I don't think the bra issue is a problem with the flashbang - I think it's because I'm just not big enough to conceal it easily.