I won a Tenkara rod at the jam once.
I yard tested it, then as I was trying to telescope it down to put it away, the tip broke. Never saw the water. I put it away for a few years and then I think gave it to Les, who may have intended to fix it.
Anyway, it doesn't appeal to me much. I mean, a fly reel offers the ability to lengthen and shorten my line, without being a hinder in any form or fashion. I don't really see the point in taking it off and fixing my line.
I do agree with others though that a small stream is about the last place you'd want to use one. Long rod, fixed length of line, in brush? No thanks. And they suck as bow and arrow rods, not enough backbone.
If it has a use, it'd be high stick nymphing. You know those noodle rods for steelhead? Same idea, just smaller fish. A long whippy rod makes sense for that. Perfect drifts, length to lift over currents, light, sensitive, tippet protection. I still think the same rod with a reel on it would be better, though.