So today I was doing a bit of spike climbing and limbing in prep to drop a couple of 100 foot tall hemlock in the front yard. There really is no place to get them down from standing, so I'm planning to chunk them down. (If I can muster the guts and grit to get all that way up.  I'm old,  and my mind keeps writing checks my body can't cash.)
Anyway,  I used the electric Makita for the up-tree limbing work,  That thing ran out of battery before I did. And the saw draws more juice than the 3Ah batteries I have for the portable drill and driver can put out without faulting.  I'll get another big battery... someday.
Pricey little devils!
Anyway,  to clean up the mess of limbs dropped.  I used the little clown saw.
Really is a light weight power house.
'Must have made a hundred cuts 4 inch and under.  Dead hemlock limbs are nice for the back deck fire pit when we eat out there.  Which is every night it's not raining.
If I were a bit more athletic, I would haul this gas saw up with me as I climb.  But all the rope pull starts might just be too much for me, limbing as I climb. 
Handi saw,  but dangerous the way I grab a piece and drop the bar only a few inches from my hand.  The electric saw is worse in regard to "operator safety"/