Hmm... my experience
I'm a woman, but I have seen and enjoyed men wearing full sheaths, full briefs, and full suits of latex. I also have a full latex wardrobe, including catsuits. From a fetishist's point of view, wearing latex (or seeing someone else wear it) in and of itself is pleasurable, so I'm not sure it's quite comparable, lol. But, it is safe from the traditional point of view.
The thinner the latex, the harder it is to keep safe and cared for. I figured that I'd point that out, since the scroguard seems a little expensive to treat as a disposable item.
And, you're a man. I will say that in the lesbian community, safe sex is also encouraged with the use of dental dams, or thin latex sheets that prevent sharing bodily fluids during cunnilingus. You'd probably do well to cover your boys with one of those, and secure it with one of these awesome and way-more-durable-looking-than-the-scroguard harnesses
http://www.stockroom.com/The-Dental-...ness-P661.aspx