There is no need for CSG cutters with ebe, once you get you hands on it you will see why.Lee might add CSG entity cutter.The way EBE works is you can paint your entire building and with precision of a small cube delete a wall block by block, and will allow for some interesting shapes, albeit in cube form.Any thing more complex you would need to add a simple model with outline fitting with the grid dimensions of EBE.
So you won't have a natural hole for example, but that isn't the intention of EBE in any ways not for the first version at least.But don't worry you will be able to create holes in your EBE creations, might just be slightly more blockly then some would like.
Win7 pro, Intel 2500K @3.7ghz 660GTX 8gig ram 16tb HDD