First of all, It's a great looking pen!
I've made a few Art Deco's in both the ballpoint and Rollerball versions. The clips are fairly heavy-duty and thus do tend to be a little tight, so you have to be careful not to add much thickness at the point the clip contacts the body. If you ever turn the Majestics, you'll see a similar "feature" It's not bad, but you want to be careful not to over-do it on size in that contact area.