These days we tend to turn to diamonds whenever we need a large holes in concrete, brick or tiles. Personally I would not want to be without my diamond core bits but there are some jobs where I hesitate to get them out.
If for example there is a possibility of hitting a wall tie I would rather get this tungsten grit hole saw set out of the van.
The sets come in plumbers’ or electricians’ sizes and are suitable for a variety of materials. Admittedly they are old technology and nobody is saying that they work as well as diamonds . For example you will struggle, as I did, on porcelain tiles but on brick and soft concrete they are fine.
Also they would not be your weapon of choice for timber but they will do it, albeit with a bit of smoke, so if you are going through a sandwich construction or are uncertain what you will hit you will be a lot better off with the tungsten grit than you would be with diamonds. Keeping a set of these, as well as a little set of diamonds, on the van means you are covered for all eventualities.