I added snowmobile carbides to my flip over. Great because I can tow it down bare roads for long distances and there is zero fishtailing on glare ice. I put them on the outside runners of the hyfax kit.
Disadvantages - Yes you have to drill through the bottom of hut. They do add weight. They will leave marks on your paved driveway. They can bite in without snow on the ice and pavement so its not ideal if you are not towing behind a sled/atv.