There is another youtuber AZ Airgunner that makes Organic vids, but 4 layer tshirt. His results with duty loads are often 11.5-13" Pen. Another one too but not sure if his blocks are always right temp and calibrated as seems to get too far pen sometimes.
There is a .25 punch now coming out, looks decent but I am not sure I would rock a .25 as my only unless really really needed to those some of those little ww1 era stuff is pretty cool.
I can only think of one that is likely fairly safe to carry chamber loaded and quick to deploy, but most of that era I am not sure I would want to be climbing ladders.