My opinion is yes! However…. If I were to tie it in, it would be to the carabiner not the linesman loop. I’m basing this opinion off of someone using tested commercial equipment that we know has minimum strength requirements. It is not based on the assumptions that it was DIY’d by a guy that learned to tie knots, use a sewing machine and splice rope 2 or 3 months ago….. I mean some of us cannot tie our shoes properly, let alone a double fisherman’s knot for a continuous prusik loop. In those cases I suggest as many connection points as you can possibly muster lolTo rein this back in a bit. Someone tell me if this is incorrect:
Generally speaking, tying the end of your tether back into the carabiner or to a linesman loop for the most part would only be beneficial for rope management. If you fall hard enough to cause your main connection to fail, it doesn’t matter where your tag end is connected because you are already toast. All this assumes you are using in spec gear and no wonky DIY gizmos.