Hey BG,
I wore the PF for over 1,700 without any issues. I think the MoS Silistretcher has advantages over the PF but that wasn’t an option three years ago.
One of the best improvements I saw was when MoS came out with the original SiliCap. Although the Phallosan cap was decent, the Silicap rocks!
To prevent blisters from air bubbles or a loose cap, I always stretched the cap on while erect. i think this prevented any issues during the 1,700 plus hours.
As for the sleeve, most of my hours I wore an AB Silicone sleeve, they are gone now and were always a pain in the ass with delivery... but I liked their sleeve. Today, I would definitely go with the silisleeve.
Loss of vacuum, the only time I ever had an issue with loss of vacuum was getting in and outta the car. I always wore the PF as designed, belt across the front hip. For whatever reason that motion seemed to break the seal more then anything else.
Give the above a try and then let me know if you have any other issues, I really wouldn’t expect any but let me know.
Good luck and I look forward to your updates,
Michael