I bought a pair of the OTB boots.  Haven't used them yet, but they look to be well made, and I hope will be a good choice for a portage boot - hopefully will stick together better than the Chota Trekkers I was disappointed with.  Did some research on the Canyoneer boots - I looked at them also, but seemed to be finding reviews that said they were starting to fall apart fairly quickly, after only one or two trips.

For slick streambed travel, probably your best choices would be a wading boot designed for fly fishing.  I've used a couple of differt pairs, but never with the felt soles - they seem to work well enough for the river use I have been using them for.

Stealth rubber is sticky on dry rock, but slick on wet rock, by the way, though my climbing shoes don't have any tread on them - that might make a difference.