I'll say it again... I feel like only reading Creation, Stasis, and Destruction would make this a great event. Of course, we'll have to see if Destruction sticks the landing in writing as well as the obviously awesome art.
In terms of the entire crossover... No. There was too much BS 'humour'. There's a place for the funny stuff in even the most serious situation but that place in XoS was strictly in Hellions where it was done well and was consistent with the book's established tone. Playing it straight with mutants fighting to the death with swords and powers is a great concept, one which didn't need to be subverted or, at least, not as badly subverted as it was here. Having two or three of the ten fights end in ridiculous ways might have worked, too, depending on exactly how those conflicts were resolved. Definitely no marriages, though. I hope the inevitable cosmic crossover is handled far better.