I don't plan and carrying on a regular basis, but for occasional use like camping or long trips.
This sounds more like an open carry situation to me, even the long road trip situation.
On road trips I have a handgun with me, in holster, in the vehicle. Not necessarily on my hip... just available.
When hiking/hunting, I have a handgun with me openly displayed... It can come off at camp for comfort occasionally and sit on the ground or table next to me.
I used to use a cheap-o nylon "fits all, fits none" holster with spare mag carrier built in for my Glock 21. I realized several problems with this particular rig.
1. It was heavy. The extra mag holder made it more so, and the gun's balance in position was dependent on the mag weight from the extra mag holder.
2. The mag carrier was on the wrong side. I carry strong side, and the mag was strong side. My off-hand would have to cross my body to get to the mag.
3. The pistol shifted a lot. Tilt changed a lot, and the cheap belt loop slid all over the place.
For open carry backpacking, I suggest leather. I have purchased a redhawk 44mag since my experiences with the G21, and I carry a Hunter-brand holster and gunbelt for it. Sort of cowboy-style, but there is a lot of sense in that style. The drop-loop stops the holster from shifting around. The cartridge loops keep spare ammo handy if needed, but distribute it all over the belt's length. The belt is wide and well built. The whole rig wears well on me.
I have a similar setup for the Glock now, minus the cartridge loops. A nice thick belt with a holster specific to the gun. Spare mag carrier on opposite side, removable if not wanted.
You get what you pay for with those junk holsters. I used to read posts about guys who had drawers full of holsters they hated, and I understand why. They kept spending $10-$20 on a holster they thought was "good enough most likely" rather than getting the one they wanted and fit them well for their purposes.
Just bite the bullet and spend $100 on a good holster and belt.