I did not use any mounts, I also have a different set of bags now, no mount with them either, just threw them over the back and tied them down, no problems yet.

 

Personally, I think large bags look terrible on the Nightster. I use small sissy bar bags on mine. they fit perfect right in front of each shock. They attach with nylon cat collars which work great.

 

I bought the HD mounts. They do not fit the Nightster properly and I removed them.

I have a set of HD leather throwover saddlebags that I bought for my Nightster because the HD website and the catalog said they fit. They do not. They are too large. They sit in the garage unused.

I bought a set of Willie & Max throwovers (compact slanted) that fit perfectly.

 

Not real good pics, but mine is an actual saddle bag for a horse cut in half and mounted on one side. I ride everyday to and from work and I got REAL tired of wearing a backpack all the time.

 

I know my bike isn't a Nightster, but throw overs with the harness shortened up and used under the seat works very well and they are very easy to take on and off.
Personally I think saddlebags on any Sportster looks like a saddle on a sow but sometimes you just have to use them.

 

Here are pictures of the Willie & Max compact slants mounted on my Nightster:

 

I did not see your bags on thier site? How do you have them mounted? Do they rub the paint?

 

I'm having a hard time finding bags that will work for my Nightster too. I want something for every day riding that will hold a jacket, wallet etc., but also something that will hold enough stuff for 2 or 3 days on the road. Bump to get more ideas/suggestions....

 

Well I got rid of that junk I got from Leatherup.com, they fell apart! I got these from the local flea market, been working great!