The Wenger Evolution S18 has a locking main blade, good beefy scissors, and an excellent crosscut saw. I have been impressed by it. I got it as a minimalist option to a pliers-based tool. Of course it's not for brute force work like batoning wood, but you can do most cutting tasks well with it.

It is not purpose-designed as a one hand opening knife. But I have had no trouble pinching the main blade's nail nick between my thumb & index finger then levering it open. I don't think you'd be completely hosed if you had to deploy it one handed.

For vehicle-based operations it's too dinky but when every gram counts I like it.