That's a good idea, i think i will do the same to my tractors...
I have been annoyed quite a time, for the stupid position of the dipstick, in a notch on the block instead of on a small tube. The notch is allways full of dirt so i keep wiping dirt into the engine when i put the dipstick back..
With a dipstick on a tube, the risk is eliminated because dirt doesnt stick on the end of a tube as much as in a notch
Where do you buy those universal dipsticks ? an automotive store ??