Our two cats used to shed their whiskers all over the house. I still have a container with about 50 to 75 whiskers (both black and white) of various lengths left. They accept paint and marking pen ink very well. And the answer to the question is that they are great for 1/35 armour. I use them all the time. Never broke one or lost one yet. They give the look of motion to the model.
Jim
PS - They are great for whip antennas on older police cars and CB antennas on cars. If you shorten them for other types, they flex well and don't get knocked off easily.