Because I'll only use it for actual touring, ie. heavily packed, sometimes riding in really hilly areas, so I need more range. Besides, 8s chains and 11T cogs last longer.

As for the Microshift: With a 20" wheel folder, I already teared the derailleur, so I wouldn't mind a shorter cage. I have found no infos about whether it can be used with a 11-32T cassette from Shimano.

This clamp from Litepro looks like it can do the job.


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Edit: A retailer tells me that, for some reason, the Microshift derailleur won't work with a 11-32T Shimano cassette :-/
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Edit: Microshift replied: "You can, but the Super Short derailleur is designed for 11-34t t 11-38t cassettes. Going to a cassette beneath that range can cause sluggish shifting in the larger cogs of the range, but you will be fine with an 11-32t." As for the plain vs. Pro shifters: "The Pro shifter has a silicone pad on the lower lever. Everything else internally is the same."

If I can use a Shimano 11-32T cassette (eg. CS-HG41-8)… can't I also use an 8s Shimano shifter (eg. SL-M315-8R)? Why would the Microshift derailleur require its own shifter then ?
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Edit: No go with a Shimano SL-M315-8R shifter, as it can't reach the last two cogs (OK by hand). Could it be the 8s Microshift cassette is wider than an 8s Shimano?