most garens go tank or pure AD this build is AD/AS/HP so it can be tanky but also does alot of dmge

Well having a DP/AS/HP garen is a unique build cause not only can garen produce massive ammounts of dmge he can also take massive amounts of dmge so he can be tanky because of the HP but having the attack speed base gives u more attack speed to make ur bloodthirster more effective

runes are attack speed and cool down the cool down helps for being able to use his skills faster wich makes the life steal help more cause of his Q

possibility of jungleing never tried it but as normal last hit minnions farm good

Pro's
hes tanky
he has life steal so lasts longer in team fights
he does alot of dmge
Con's
very little defense
very little magic resist