I'm trying to plan my pedal board and organic sound is quite important to me. Because I'll only have a few pedals in my setup, I think it's worth going for true-bypass where ever possible...

So... here comes a ridiculous question. Do line switchers such as this have an effect on the tone at all? I find with most Boss pedals that with the pedal off, the clean tone is slightly flat or damp. Do AB switchers of line selectors suffer from the same thing or is not the same thing at all?
but if your worried about boss, check out the Morley ABY switcher
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You serious dude? You must be one serious audiophile to notice that impact a boss pedal in the off position, you might be better making your own with an old school SWITCH instead of just a bypass.