Haven't tried it, bt my gut feeling is it sould work OK is one of those wall mounts for something like a 14-21" CRT TV... The ones
i''ve seen all hfave had decent size plate that could be angled somewhat. If you want it more ecure, and/or neater than a nylon strap I'd look at finding or machining some steel or alu C-clamps in suitable size, drilll and tap for screws to tighten clamp/stand/laptop tohether