No they all meet the requirements of both codes.
Though rugby is easiest to play in boots specifically made for rugby, they are not necessary. Soccer cleats work just fine. The only requirement for rugby boots is that they must not have a spike on the bottom of the toes.
80 minutes
yes as long as they are complient with IRB Rules they can be worn
Soccer boots are lower cut and and 6 studs - rugby boots are cut slightly high at the ankle and can have 8 studs
Preference is that of the player. Most centres where rugby boots as opposed to soccer boots as the rugby version have 6 sole studs and 2 heal where soccer boots have 4 sole and 2 heal. In rugby the studs used are all "heal" length for grip, soccer use 10 millimeter in the sole
Le Coq Sportiff Rugby Boots
Standards rugby boots are fine for all terrain types its the studs that change from long to short for very firm ground
http://www.worldrugbyshop.com/departments-footwear-soft-ground-rugby-boots-ccc-mid-rampage-si-hard-toe-rugby-boot.html
He wears sandals
micheal
gilbert