They make some pretty comfortable harnesses, complete with retracting trauma straps that you can "stand on" to relieve the pressure from the "family jewels" in the event you fall and are swinging for 30-60 minutes until rescue is made.
Rose Safety presented a safety day for my previous company. They demonstrated a 6' fall and the violent stop from that short of a distance (straight lanyard) - all I can say is OUCH!! No more kids after that!
They repeated the fall with a shock arresting system - HUGE difference. Of course OSHA mandates a shock arresting system now - either lanyard style or the other types.
Bottom line I took away from the demonstration, if you fall, most likely you will be suspended for quite some time. After two minutes, both legs will start to go to sleep from lack of circulation - plus the twins won't be comfortable. Serious trauma damage can occur to your legs and jewels.
Exofit makes some very good harness, easy on and off. You can get them in many different styles, with tool bags, etc. Trauma straps can be added. Depending on the model - $250-350 each. Lanyards extra. Some specialized models are $500 plus - crazy high.
http://m.pksafety.com/exha.html
Find a industrial safety supply - they will have all sorts of options. Every large city has several of these companies that specialize in safety gear.
Hope this helps.