The original ZTool for this weighs in at 10MB (at the lowest subdiv level), so even zipped it’s too large but here is a compromise which will at least show some detail and also a little about displacement maps.
You MUST follow these instructions otherwise the thing will foul up. Unzip the file and then load the GargoyleDisp.txt file using the ZScript>Load button. Play the zscript and it will load the model and apply the displacement map. To see how to apply a displacement map in ZBrush watch the zscript with Show Actions switched on. The quality is not great because I have used a jpg for the disp map so as to keep file sizes as small as possible. (Normally you would use a 16 bit tiff or psd file.) Also you may notice that GUV tiles texturing is applied to the model - I discovered after doing the displacement that mapping with GUV tiles increases the ZTool size. Also, managed to leave out the eyes: sorry. :o
The detailing of the model was all done in Edit mode, not Projection Master. It was very quick, no more than 15 minutes. After dividing the mesh a few times, I converted a couple of alphas to stencils and with Stencil>Wrap Mode on ran over the model with the Standard and Inflate brushes. If you’ve enough polys to hold the detail you can do alot that way.
In the image above I used Jantim’s plasterstone material and an adapted version of the ColorizeGlow.