I just don't think the 7's added length is practical enough to justify carrying it. It may chop a little better than the 10 but if you are going to chop, get the 9 or 4.
The 12 can chop as good as the 7 and it is a better blade shape.
What I mean is, because of the clip on the 7, you really can't use the extra length to baton. You can but it will chew your baton to pieces really quick.
So as far as usable blade length for batoning, the 7 only has maybe 1/4 inch more usable length than the 10.
Now the 12 on the other hand is a way better woods blade and you can baton all the way down to the tip.
Since it's a little shorter than the 7, it handles way better for smaller tasks as well.
BK-9, BK-7, Bk-12, BK-10, Modded BK-10
With the prices on the BK-4 so good right now, you may want to get one of those for wood processing and a BK-16? Or a BK-15, smoking deals on those too.
So basically in my experience, I just prefer the other blades. Don't get me wrong, the 7 will do just fine, and you may love it. I also am not a fan of clip points for a woods knife. If you look in the picture at my modded 10, you can see that I ground down the clip so I have a thicker and more usable point for my needs.
And if I was gonna have to skin or quarter out an animal in the field, the smaller length of the 10 would be easier for me personally to use. You can still baton it thru cartilage and stuff.
But really if you are looking to do more wood processing, then maybe the 7 will be a little better choice over the 10?