I agree that they leak a lot, but they are one of the most comfortable cans I ever did wear (both SR60i and 80i). The bowl cups (L-cush) change it from a supra-aural to a standard over the ears can, and with my ears there was plenty space - no pressure on ear tips or lobe. The bowls seem to polarise wearers, some people, like myself, found them to be more comfortable, others found it put pressure on the extremities of their ears - they do however result in better tightness in the bass, slightly better bass extension and more clarity in my experience.
mrk, I'm slightly stumped at the term fatiguing, their sound signature results in a slightly rolled off treble - which if anything decreases their fatigue? I do apologise if I have misinterpreted your statement!