we had loads of them and layed them in as we tiled, they do the spiked shoes so you can walk in the bed (still got a pair but never do 50m2 a day over here) and some big foot shoe plates to spread your load on laid tiles (never used these)
trim snips only do picture frame mitres, biggest waste of money I've ever spent!, I use a nobex type mitre saw, comes in useul for coving and conicing too