I realize that winches are designed to run out in the open exposing themselves to God and everything else. My concern with this design is the winch box only has vents on the front. There won't be much airflow through the box to help dry things out. The front vents will let a road splash, rain, snow and everything else that's mucky and nasty that lives on roads in without a way to exit. The only holes in the back are the cable routing holes, several bolt holes and the two drain holes in the bottom of the box.
I live in the Pacific Northwest where things get wet and stay wet for a while. I can't imagine a synthetic rope winchline will be happy being stuck in a constantly wet place without drying out for weeks and or months at a time.
Winches and winchlines are designed to be tough as nails but given the expense involved I'd like to protect my investment by keeping them out of the elements as much as possible.
Aluminess makes superior products and I am impressed with the bumper overall. Kenny and the people down there are great to work. I called them a bunch of times with custom mod requests and they never got tired of talking to me. I will still recommend this company to anyone and everyone. I like my bumper but I can tweak it to make it better than it is. They didn't flinch at all when I asked them to drop the step on the nerf bars down 2" to make it easier for me to get into and out of the van. I've had knee replacement surgery and my right leg doesn't do the things it used to do 30 years ago
I'll edit this post with pictures of the back of the bumper later this morning.
Edit with photo of backside of front bumper