re: convex edges - most of the knives you've used (and sharpened on the sharpmaker, which i like a LOT, have one myself) are v-grind edges. point makes a V as it works to the edge (other edges - chisel grind = 1 side flat, one side is half of that V; hollow grind = instead of a flat v, edges curve inwards along the way to the point like the v you make when you draw a stick figure bird in a picture - better slicer, not as durable an edge).
a convex edge is a continuous curve from the edges to the point, kind of like an upside-down raindrop. my sharpest blades are all convex edges.
-if you use the sharpmaker on one, you'll turn a convex edge into a straight V edge.
i was strop-hesitant too. seems like extra work. now i even strop my V edges after sharpening them on the sharpmaker. takes them from 'yep, that's sharp' to 'holy c*@p that's sharp!'
stropping is a compound (or 2 or 3, depending on your strop) on a strip of leather. you lightly pull the knife (sharp edge trailing) along the strop, alternating sides. 10-20 strokes per side of the strop, weight of the knife is all you need, you don't have to push down while you do it. amazing difference in the sharp-to-REALLY-sharp paper-cutting/arm hair shaving edge it gives. you tube has plenty of videos:
http://www.youtube.com/watch?v=FQCkKPGSOtA&feature=related
and for true sharpening once you beat up on a convex edge - i have a belt sander now, but started with the old mouse/sand paper routine. cheap and works great. same process as the strop - always pull sharp edge trailing - get an old mouse pad, some sand paper - 400g, 800g, 1000g, 1500g (i've also got 2000g, 4000g, 6000g). lay the sandpaper on the mouse pad (gives a little cushion, so it automatically rounds the convex edge as you pull the knife across). same process as stropping. hard to screw up b/c you're pulling away from the sharp edge, you won't ding the edge, you're pulling metal off the tip instead of grinding the tip down like regular V-edge sharpeners.
i've got a lot of knives (A LOT), and can get everything pretty sharp, but as i said before, my crazy sharp knives are all convex edge. it lends itself to SHARP. and a rounded ceramic sharpening stick in your pack is all you need to maintain in the field. about the same size as the mini-stone you'd have for a V-edge.
wow, i rambled on there. sorry about that.
