I have an old, very sturdy semi-circular aluminum stake (left over from some long-since-discarded junky tent) which works just fine as a potty trowel. Weighs the same as the Ti trowel here and is also an extra tent stake just in case (needed it on my last trip when I lost a stake, even though the latter was painted blaze orange). It's just the right size that I can roll up my stove windscreen (inside a plastic bag, of course) inside the curve of the stake for the windscreen's protection.
I don't have the tools or the skill to make this trowel and am quite satisfied with my old tent stake!
The standard plastic trowel, IMHO, is useless as well as heavy. During the Northwest's dry season (yes, we do have one!) it won't even scratch the surface of the ground, much less dig a hole.