Yea, that's what I wanted to know. It does have a tab but I'm not sure how solid the base is. If the tab at the top isn't hard you'll run into problems with a harness and keeping it in place during sex.
There are two general kinds of harnesses: one strap or two. A harness with one strap would have a single strap go from the O ring (part that goes around the shaft) like a thong. A harness with two straps has...well...two straps like a jock strap. I like two straps, myself. The commando harness (ASLAN Leather has a vegan, Babeland for leather) is a good option. It's very basic but you might run into some problems with cleaning because it's made of leather and vinyl.