I've one patch (sewn) on the breast pocket of my suit... thought about putting another one on... but got to thinking... conservationally speaking is this really a good idea?
We've caves here, where some passages are lined with popcorn and sometimes enact like velcro when one is trying to negotiate them. In many cases this is the main trail through the cave and thus can't be helped.
But anyway, I wonder about bits and pieces of thread that come off our suits (something that can't be helped... other than avoid going caving altogether...
... no, not that! ahhhh!) but as with many patches these are sewn designs on a shaped piece of (heavy cloth). Over time one would think that bits of thread and pieces would come off. With a glued patch one could concievably tear off the patch itself and it would remain in the cave (til the next caver found it or not at all)... this is after the patch has been on for a few years and a dozen or more washings. Just how durable are these glues?
I dunno, just thinking aloud here.