You know, honestly, I don't think it would be. There are a lot of shavings in the poo, so it's not like getting a truckload of green chicken manure delivered. It's also very water soluable nitrogen, so I think it would work it's way down into your root systems at a nice pace.
I add mine to an empty garden bed. Later I will turn it under a few times. I have put it directly on my blackberries. The berries did fine with no burn. But like the others said it is mostly shavings.
As for the wood shavings depcomposing, I have been using a pelletted corn cob. Found at my local farm store. I by the 40lbs bag from the horse bedding ilse instead of the little bag that they have in the chicken and rabbit ilse and the big bag is actually cheaper. Seems to be working great. I have been putting it in my compost b-4 adding to the garden.