I find it indispensable. I've milled a heap of polymer AR-15 lowers using it, also it was required for the several ventilated barrel extensions I've made, and together with hardwood jigs have used it to complete various pieces and parts of several registered suppressors. I keep a small pile of hardwood blocks of various shapes and sizes (mostly 1x2 stuff) handy as sacrificial back-up blocks when drilling things out. Have also used the milling vise for drilling gas port holes, front sight holes, and for some light milling operations in the NON-climbing formation. When it absolutely crowds me out of drilling something, I usually just swing the whole table and vise out of the way, throw a big cub-ish chunk of wood on the press base, and use that for a table.