Thank you for your reply. I am aware the FET's can switch fast, but I was worried about them burning up during switching.
I will have to decide if I want to go for my own FET circuit, or buy a premade driver circuit.
This driver circuit is quite attractive, as it contains everything needed; just direct wire to the Arduino, direct wire to the LED ribbon trips, direct wire to the 12V power supply, no other components needed. It now boils down to a simplicity vs cost scenario.