I don't have any great pics of my setups but i'll post what i have. As for the ecoearth, i would assume that any loose substrate would cause impaction...don't quote me on that though. Many people have used loose substrates with no problems while others have had impactions. I would also assume that the crickets could dig under it so i don't think it would be much help, but again i don't know for sure, i use mealworms in a bowl.
Red 
P.S. the pic is of my 40 gal setup, slightly different than the way it is now....i had to change a few things, like the cave on the second level is now on the floor. 
>>I like the sounds of the slate the best, so could people with these types of setups post pictures of them? I like the idea of haveing some ecoearth at one end, is there a problem with inpaction with that stuff? Also, what if I were to put some of the ecoearth between the peices of slate so the cix don't get under there, is that a good idea? Thanks again for so many responses. Jake.
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>>0.3 Normal Leopard geckos
>>1.0 High Yellow Leo
>>1.2 Albino Leos
>>3.1 Frilled Dragons
>>0.0.4 D. Leucomelas
>>1.0 Adult Albino Corn
>>0.1.1 Normal Corns
>>1.1 Creamcicle Corns
>>0.0.1 Crimson Corn

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Crested Gecko Zeek:1.0
LEOS: Boo: 1.0 normal , Bronx & Nala: 1.1 blizzard,
Lily: 0.1 patternless, Abby: 0.1 albino, Zoe: 0.1 reduced pattern, Dot: 0.1 hypo
Chip: 1.0 papillion (small dog)