Was in Destard last night, and I usually only take my DS dragon slayer, and when I have to kill some demons in around the shadow wyrms, I toggle in and out of EoO. So then I left that area, and a Greater Dragon was blocking my path to the door. CW, charged right in, DSing every hit. Then I noticed that the dragon was melee-ing me for 80 dmg/hit. Hmm. Seems I had forgotten to cancel my E0O. So, yeah, don't do that. Unless you're looking for an extra challenge... Then by all means, this is a good way to go about it.