I'm not a big fan of reverse holos, cause most of the time, they just look silly. The older ones from E-Series cards and the first ex sets look really bad imo. The best reverse holos are in mid-ex series cards, where the holo is in the artwork of the card and the set logo is printed in the lower right corner. Makes lame cards look awesome! I wish they still did that, but having the type symbol in the reverse holo looks good too.
I don't collect them alongside the non-holo versions. Too much effort, though I probably could do that considering how much Plasma Storm stuff I have.