I have looked at their web page and know quite a bit about them
Q: Are they safe to use in an RV? A: Yes
Q: Are there downsides to them? A: yes
Q: What are they: A: follows.
Some of the downsides are that they only work with METAL pans, if you have any glass pans (Corning ware for example) they will not work.
Second they may not work with all metal pans
They also prefer a pan with a FLAT bottom, if the pan is warped they won't work as well.
Finally they are expensive (roughly 100 bucks plus S&H v/s 16 for my hot metal job) and with the up-sell you can get right close to 3 times that when you call in.. .Or so the complaints web site said.
I did not read enough of the complaints web site to get a good feel for it, but the up-sell and the "Just pay S*H for the 2nd one" (the amount of the S&H) were the biggies.
And if you mail order it do not forget to declare the purchase on your state tax return and pay use tax.. Some states are going after that now.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times