I'm curious about the Winwood Decksters. I love being able to stop down and clip in to my PD-m520's without looking or thinking about what side is up (after commuting with some awful resin platforms with mountain cages that were just too small for me).
5% or less of my rides would be convenient if I didn't have to wear my cycling shoes (I don't mind getting groceries in my spd shoes, but picnics and the church even last week where we took my daughter for an easter egg hunt are a pain to have to change into other shoes when I get there - and carry them there).
Not sure that's often enough to want to have a pedal that I can only clip in on one side and have the other side platform (reminisce back to the bad old days of my toe cages where I had to flip the pedal after every stop because the cage was so heavy and that happened often in my heavily stop and go old commute route).
On the other hand, the decksters with cleats separate cost almost as much as the shimano a530 and much more than most campus pedal if I wanted to just try that route.
Or since the desire for platforms is so infrequent, I could just take the mountain bike toe cages off my cheap resin pedals and put those on every time I wanted to not have cycling shoes on (and had the time to do that). That'd definitely be the cheapest route, but probably also the least pleasant.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"