It is definitely useful. You can protect your rangeds at the beginning, forming a meat wall around them. Or manipulate & get best use of obstacles aswell.
BUT! It is really handy to put Royal Thorns in front, for me at least. This way, (especially when fighting with keepers) 1-3 towers can be inside Royal Thorns' range at the beginning. Long live Royal Thorns + Paladins (second wind) + Tactics
