Do you guys ever use bow saws? Good Bahco style compact saws chew through limbs very fast with little effort:
https://www.amazon.com/dp/B0001IX7TC/?tag=atomicindus08-20
These compact chain saw devices look like an amputation accident waiting to happen. Particularly when scrambling around down trees and climbing. The bow saws cut super easy and have replaceable blades (would be a pain to resharpen). A slip is sill going to be nasty but should leave you with all your limbs. I even use this for crown limbing and cutup of trees that I down. It works plenty fast and is way way safer than a small chain saw and dealing the binds, burying the bar in the dirt, chain slips, and 2-stroke exhaust and noise (if not battery powered). I have been using the saw for ~20 years on the original blade with no gas, batteries etc to mess with and potentially go bad. Only now, after long use, I might be near the point of needing a blade replacement (I oil it sometimes) and the new blade is $10 (think I have a spare but it lasted so long I will need to search). It has seen a fair amount of yearly use also: at least 15 tree crowns cut apart, many hours of limb trimming on ladders or climbing, etc. The hand guard on this is also very good ... it prevents finger mashing if you saw too far. I find bow saws also work much better than conventional saws. The blade is thin and high tension so it does not bind easily. The frame makes it easy to grab and manipulate in odd positions. If I need to cut something bigger than the small frame (say more than 4 ish inches diameter), I am likely going to be firing up my 2-stroke chainsaw (which is a pain, I might replace it with a battery model if I had much regular tree or firewood work) anyway.
No criticism intended OP and I realize some people have different use contexts, but I get the feeling everyone wants battery powered devices today when it may not always be the best fit.