I was worried about whether these shoes would do the trick.  They were fairly cheap ($25 ish) and looked cool, so I was worried they might be "form over function".

I purchased them anyway for a river rafting trip down the Colorado River through the Grand Canyon and I was wrong - they were absolutely perfect!

Unlike many water shoes/river shoes, they look cool.  But they work really well too - there are holes in the bottom that water drains out through.  The soles are some kind of rubber and have some traction so these were great for short hikes on trails and through vegetation or on rocks - my feet were completely protected.  But I could also walk through streams and have the water drain instantly.  They dried out quickly too whenever we were in the sun for a bit.

In some shoes I am a 10.5 and in some shoes I am a 10.  I ordered a 10.5.  It felt just the slightest bit loose (since I didn't wear with socks), but that wasn't a problem because the piping you see at the top of the foot hole is actually elastic and holds the shoe on.  I think a 10 could have even been too small.  These were super comfortable and never felt like they were falling off.

My brother wore serious hiking shoes and he was able to climb some rock faces that I wouldn't attempt in these.  But for hiking, I was more than comfortable.  And my feet dried quickly due to the draining ability of these shoes.

For $25, these are practically disposable and did the trick for the trip, functioning WAY better than I expected (I'd have paid more).  I'd order whatever size you usually are, and if you are often between two half sizes, choose the large one because the elastic properties of the shoe will allow them to mold to your feet and stay secured.