Yellowknife
WKR
One of my concerns when I started using a Stone Glacier Terminus, was the access to the daily use gear. With only two small pockets, my spotting scopes, lunch, jacket, etc. end up in the main bag. The Solo pack has an awesome panel loading system the makes all that stuff easy to get at, but the Terminus is a top loader, and you are forced to dig to get things. Not a huge deal in truth, but not the handiest system either. One possible option is to add pockets, but I really like the streamlined, simple design and wanted to retain that as much as possible. My goal was just to make access to the main bag easier.
I've never been a fan of the "sleeping bag compartment" type zippers on packs. Just never had a need to rapidly access my sleeping bag I guess.
However, I do have a Sitka Bivy pack that was given to me a while back that has a vertical side zipper, and I really really like that feature. After a little debate with myself as to the best location, I decided to add a 16" zipper to the left side.

Zipper is a #8 Ykk and should be pretty sturdy. When I really have it stuffed, the compression straps should help take the pressure off.

Now my 85mm spotting scope can slip inside when used in day hunting mode, and I can easily access my commonly used gear without hanging pockets on the outside.

The pack weighed in at 3 lbs, 15 oz before the mod, and 4 lb 0 oz after, so the weight penalty was minimal. I did give up some water resistance on that side, and a water resistant zipper may have been a better choice, but I didn't have one handy so a #8 YKK it was. Since I can't sew to save my life, a local shop put it in for me in less than an hour. Based on my previous experience with vertical zippers, I'm pretty sure I'm to like it.
Yk
I've never been a fan of the "sleeping bag compartment" type zippers on packs. Just never had a need to rapidly access my sleeping bag I guess.


Zipper is a #8 Ykk and should be pretty sturdy. When I really have it stuffed, the compression straps should help take the pressure off.

Now my 85mm spotting scope can slip inside when used in day hunting mode, and I can easily access my commonly used gear without hanging pockets on the outside.

The pack weighed in at 3 lbs, 15 oz before the mod, and 4 lb 0 oz after, so the weight penalty was minimal. I did give up some water resistance on that side, and a water resistant zipper may have been a better choice, but I didn't have one handy so a #8 YKK it was. Since I can't sew to save my life, a local shop put it in for me in less than an hour. Based on my previous experience with vertical zippers, I'm pretty sure I'm to like it.
Yk