Studded Tires for 24 and 700c unicycles?

Ken Cline posted a note about the availability of Nokian studded tires
for 26" and 700c wheels (see below). My perusal of Nokian products
lead me to believe that heavily studded tires (with over 200 studs per
tire) are only available for 26" tires. The 700c tires sport about
106-110 studs per tire, which seems a bit sparse for serious winter
unicycling (on icy/snowy residential roads, sidewalks, and bike
paths). Does any one out there in 'uniland' know where I can find an
aggresively studded 700c tire? How about an aggresively studded 24"
tire? I'd sure appreciate your input. Thanks! --carl (North Dakota)

From: Ken Cline (ken.cline@cs.cmu.edu)
Subject: Re: Winter Riding

Nokians seem to be the best studded tires. They wear like iron and
have low profile extremely hard studs. As far as I've seen, they're
only available in 26" and 700c. Retail price ranges from US$69 for a
mild tread with 106 studs to $139 for an aggressive downhill tire
loaded with 336 carbide tipped ice biters. I spent about $60 on sale
for a Mount & Ground with 160 studs. Here's a link to a store with
pictures and prices: [http://webmountainbike.com/nokstudbikti.html].

There are other brands, and at least one 20" studded tire out there.
Check the web for prices. Homemade studs are doable, too, but be
careful!

Ken