I've heard the remora holster is useless for anything but pocket carry. It doesn't retain the gun very well IWB and it doesn't retain itself in that position. Lots of reviews of people saying it just fell out.
Remora is a good company with excellent customer service, and a quality product.
Having said that, I purchased one several months ago, installed my PF9, tucked it in my pants, and felt it promptly slide down my leg. I tried tightening my belt, different pants, wider belt, different position, but the outcome was always the same.
Since last fall I have lost 43 pounds and my clothes do not fit as tight as they used to. Realizing that may contribute to the problem, I bought some new jeans in the correct size, but I still had the same issue.
I ran out of options, so I contacted Remora, explained the situation, and the owner said "return it for a full refund". I did that and to my surprise he even refunded the original shipping costs.
The design and materials used in the holster are a good idea, it just didn't work for me. I'm sure others will not experience the issues I had, as I have seen many positive reviews for thier holsters. My advice is to try them, but if it doesn't work for you, their customer service will make it right for you.
As a side note, I did find a holster that has worked out great for me. It's a Blackhawk IWB size 8. It has a suede outer covering that is comfortable against my skin, and a sturdy plastic clip to affix it to your pants or belt. I can wear it all day and forget it's on me, and I don't worry about retention. their website is
www.blackhawk.com .