Know what's funny...is I have the Wilco with a BUNCH of stuff added on to it. I've been on some trails with crazy approach angles in CA, AZ, NV, UT and CO and NEVER hit the Wilco. I hit the extension and D-ring I have in the Wilco hitch, but that's it. Now I wasn't doing any super duper Rubicon/Moab (tho I did do White Rim and other stuff) crazy rock crawling, but enough to say that whoever is worried about clearance on a Wilco shouldn't be. It's really not THAT bad. I have ZERO complaints about mine except I've reached the weight limit with all I've added on the single swing out.
So you can get the Wilco single arm with higher clearance for just holding a spare or like others said, call Luke at 4x4 Labs. He will be building my rear come Dec or Jan when he's caught up. My dual arms will be custom tho and I'm betting he sells a bunch once I give him my layout of what I want on them. A high clearance "expedition" type bumper. I hate the word overland.