My experience from yesterday,
I received my safeguard in the mail and went to try it out in the yard. I installed in on my rappel rope and adjusted my Beal Jammy (tied in autoblock) to support me. I'm standing on the ground just leaning back away from the tree for a visual reference. While the safeguard worked flawlessly I'm still having trouble getting the Beal Jammy to catch consistently. I have wrapped the autoblock enough that I can barely clip into it and still am have trouble with it biting consistently. I untied it and tied it back in prussic configuration and it bit better but would still not automatically catch if I opened the safeguard and let go of the knot. My fear with the prussic is while descending it would catch and basically lock down causing me to either re-rig and unweight my rappel line or cut the prussic and depend solely on the safeguard (Only in emergency) I feel confident in the safeguard supporting me but still would like to figure out how to have the friction hitch as back-up/extra control for the descent. My thoughts are the same as previously mentioned that the slick sheaths that both ropes have is effecting its ability to bite due to the limited friction. Is this something that typically gets better as the ropes get more use and broke in? Or should I expect the same issues to remain?