Two very different animals honestly. P90s are single coils essentially, and the dimarzios are obviously some high output humbuckers.
That said, if you already own a HH axis, and craving something "different", then by all means try out those p90s. Also, remember you can always add p90s to a humbucker route, but not the other way around. Seymour duncan p-rails may be something to look into.