Thoughts on this holster

I've been looking at an appendix rig and I am leaning towards the spider concealment appendix rig (google it they are nice). However, I found this on ebay ( https://ebay.to/2YoD7sz )​It looks good but I was wondering what everyone's thoughts are on it. The thing that I like about it is the mag caddie it is flexible (bend with your natural body shape) and removable. The price isn't that bad either. I am just hesitant about buying these things off ebay. The price for both holsters are roughly the same but spider concealment has a good reputation... but I like the design of the ebay one better. Let me know if you see something unsafe (other than being appendix carry) about the ebay holster. Or any other recommendations. Thanks everyone.​I already have a ventcore coming for 4 O'clock carry via /r/CCW http://bit.ly/2Hl5EtH