( Fūinjutsu: Seikatsu Kekkai ) – Sealing Technique: Living Barrier
The cons outweigh any possible pro, the fact that you need to take these weapons, cross them, then maintain that X until whenever you feel like dropping it, if they move out of the barrier, they're suddenly free from all the negative repercussions they had while inside, you look stupid for thinking it could work in any scenario (unless they're restrained). One pro to this mess, would be it's fast execution.
( Suji Haji Fūin ) - Muscle Restriction Seal
Seeing as this requires physical contact, i'd most likely use it in situations where I can mask my movement, with either a thick mist, or stealing their vision with Bringer of Darkness. Once that's done, I would then use Silent Homicide to get rid of any sound I could make that would reveal my location, then sneakily place it on the nape of their neck, or something of the sort. Now, if it was used on myself, I wouldn't give them a chance to run away, immediately after i'm using a technique that requires no handseals (e.g, Nagashi, Ash Pile Steaming Murder), to prevent them from further utilizing my handicap against me.