Not sure what ebb the gryphon uses, but I too used to be wary of ebbs. However, the bushnell ebb on my Jones has been trouble free with not a single creak or slip for almost 3 years now. I would buy another in a heartbeat. Ebb are easier than track ends with disc brakes and allow to adjust a little for ground clearance too. Still think that sliding dropouts like paragon or blackcat are better, but the bushnell ebb has been flawless so far.
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