Personally, I'm not particularly bothered about the comics or whether these films are released 'Slipcased' (with comics) or as a combined 'Steelbook'...
I'm just bloody happy that these films are finally being released!!!...and can't wait until the end of April... but you know what...
If there was only one release I'd have to buy whatever that was but, as there is a choice, I will be buying the Slipcased versions (which means I will get the comics) and, as a collector, I see the steelbook as an additional special release to the slipcased versions - so, I'm going to buy that too!
Hell, I might even buy the dvd releases too, just to keep my Arrow collection complete!