Yes, so long as they comply with the national regulating body's rules on Rugby boots. I don't know where you're from, but my national body is the IRFU. This is not a link to their site, but nonetheless provides useful information about what is and isn't legal o the rugby pitch
http://www.swindonrfc.co.uk/juniors/reference/studs.htm
micheal
Australian footballers wear much the same as soccer and rugby players: team guernseys, shorts, club socks and studded football boots.
Le Coq Sportiff Rugby Boots
I wear the same boots that c.ronaldo wears so I wear mercurials because c.ronaldo is the football player I admier and mercurial boots are the only type of boots I would ever wear.
Yes you can as soccer cleats are versatile cleats, but i would recommend football cleats as they have a higher ankle providing more support.
No you don't need to wear football boots, you could wear running shoes.
Usually you wear a rugby jersey, rugby shorts, rugby socks and boots. Some people like myself wear headgear and 99.999% of people wear mouth guards
Barcelona
Which Version? The US call American football-football and association football-soccer.In the UK we call association football-football,Rugby football-Rugby and American football a girl's game because of all the padding they wear!
Rugby
http://www.worldrugbyshop.com/departments-footwear-soft-ground-rugby-boots-ccc-mid-rampage-si-hard-toe-rugby-boot.html
Many players where soccer boots however, rugby "boots" have a higher ankle area to protect that area when rucking or be rucked over. The term "Rugby boot" actually refers to the earliest foot-ware which were in fact working boots. the studs were small studs which were used to reduce wear on the sole on the boot. These were worn by the players who came from industry especially heavy industry and coal mining.