My cats love to watch my lizards, my beardie HATES it, but the leos dont seem to mind. One of my males even seemed to enjoy teasing that cats. Whenever they were watching his tank he would come out and walk back and forth along the front, right up next to the cats nose cause he knew they couldn't get it!
The only time where it would be a big problem would be if you have a heat lamp, which the cat could knock over and start a fire, but since you are using a UTH it should be allset. I would get some cage clamps at the show too, just to be extra carefull though.

YOu sound like you are on the right track to happy leos!

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1.0 green iguana-Deitrich
1.1 Common Boa-Un-Named, Ursula
1.0 Ball Python-Anabell (go figure!)
1.0 Red Tegu-Uteg
1.0 Albino Cal King-Pig
0.1 Mexican Black King-Morticia
1.1 Bearded Dragons-Unnamed, Hanabil
1.0 Albino San Diego Gopher-Unnamed
0.1 Hermans tort-Esio
1.1 JCP-Milton, Medusa
1.1 Reverse Okeetee Corn-Unnamed
0.1 Snow Corn-Unnamed
1.0 Hypo Okeetee Corn-Unnamed
0.1 Motley Okeetee-Unnamed
1.0 Western Hoggie-Wyrm
0.0.1 Rose Hair Taruntla-Unnamed
2.0 Leopard Geckos-Reptar, Pogo
4.1 cats-Tucker,Poe,Abhib,Emerald, Felicity
0.1 Bullmastiff-Asha