Rodolphus took the parchment from Lucius and read it over even as he listened to the other man's explanation. He was silent for a moment as he worked through possibilities and plans then he nodded in approval.
"This is well done, my friend. Thank you for your time and effort on this," he said finally. "I believe the advantages will outweigh the disadvantages."
It would be an interesting difficulty, protecting the man holding the spell but it was not unworkable.
"A pity we cannot get our hands on an invisibility cloak," he mused. "That would be the most ideal solution but there are definitely ways of protecting the person holding the spell without wasting too much in terms of manpower."
He chuckled, a cold and cruel sound. "Though given that it is Dolohov and his woman as well as the old fool, Dumbledore, who are the main users of Muggle weaponry, one could easily say that keep the spell over them would work just as effectively." he waved one hand in the air. "Needless to say, we shall have to work out new tactics to bring this spell into play in the most effective manner."