There are many ways to cut or break G-10. Easiest way is to score it deeply with a strong
utility knife and then simply "break" it by snapping it over a rigid corner.

A hacksaw doesn't work well because the teeth are too finely spaced. However a coping saw
does work fine (wider teeth).

G10 can be cut with fiber cut-off wheels in a rotary tool. This allows for very low waste. Keep
the speed, rate and depth of cut low to prevent horrendous stenches, copious amounts of noxious
smoke and badly-burned material. Cutting it too fast WILL really p*ss off your housemates.
Use every safety measure you have. It makes a lot of very fine dust.

It can also be cut with a hacksaw, but you'll wear out your elbow long before you make any money.
Meaning, you'll have more time in the project than the project is worth.

It seems to drill without any particular problems.