With wheels like that maybe they don't go to the hood that does station 60 type of flying. I was lucky, in three summers, no broken skis, no station 60's and never got stuck in the mud. Best flying of my life.
Well Longjon, to be fair, you did ask for "comments", which might tend to stray from intelligent informed reply a little. I have no awareness if the wheel in the photo is approved on the Twin Otter. Presuming it is (as it is shown installed), it would have satisfied all the design requirements for strength and durability. One will one day end up packed with mud, and therefore shake on takeoff, but it will be nothing more than a nuisance.
My remark about being sacrificial was serious. This is beneficial for the Twin Otter, as replacing nose wheels is a lot less work than station 60 repairs, particularly remotely. Twin Otter nosewheels take an unusual amount of abuse, simply because of the nature of the plane, and the operations. I laid a bit of rubber steering a Twin Otter on my first left seat landing decades ago, because the pilot in the right seat was trying to "help" me.
Perhaps you have more information you would like to offer about this wheel. Though before I would recommend it to my Twin Otter clients, I would require removable mud/debris covers on it for the reasons I have already stated.
If this is used strictly paved/clean gravel strip to strip, then I don't see a problem. If you have a problem with landing causing a station 60 issue, maybe you shouldn't be flying this particular twin otter or any other for that matter.
I think it looks cool, and if it saves a bit of weight then so much the better. I wonder if there is more or less drag, or about the same, compared to the original unit.
Many Twin Otters on "small wheels" don't go to places where mud and grass buildup are a problem. Of course, you'd have to think about this if you were operating these wheels in an "off strip" environment.