Blood point aggro

[Athrix]

I guess this question would be aimed towards, tanks and rogues regarding the recent threat increase toward siphon. As a rogue I was considering getting a blood point for my offhand to make my character a little more self sufficient. I generally can keep myself from pulling aggro and this would top me off from DS riposte, AE, etc. The recent patch notes made me a bit worried that using a BP offhand might give me the opposite effect of what I was going for.

If you are a rogue have you noticed an increase in threat generated from siphon? If so is it manageable.

Same question if your a tank.

Thanks!