So I was pleasently surprised when my order of Realistic Water (tm) from Woodland Scenics arrived this afternoon.  I, of course, dashed right in and skimmed the instructions.  With a twist of the cap, I was pouring the milky liquid.  I was quite happy when I saw that my sideboards and seals were holding up great.

 
Look Ma, No Leaks...

 
 
Well, I don't have any pictures of the leakage that followed, but somewhere along the wooden counterscarp wall, there was an inadequete seal.  I came back in the room to find a pool of the precious liquid dripping out from the very front edge of the tile. 
 
OMG!
 
So after some strategic clamping and a HazMat crew, I think I've got it solved for now.  But, I'm keeping a close eye on it.
 
So, lesson learned:
 
1.  Pour real water into your planned water feature if there is any possibility of a leak.
 
Otherwise I have high hopes for it.  As a note, make sure your item will be in a well ventilated but dust free environment for the drying.  The odor isn't unpleasent, it reminds me of Future Floor Polish (Klear for you UK folks), but initially it did get a bit strong.
 
Also, it seems I will need a second bottle to get the depth I wanted. (especially after Operation Leaky)
 
Learn from my mistakes....