350ms is about 20F, let's take sword>talis switch, Flash of Trick is 34F pointblank + Race of Edge afterswitch attack (at least it looks like it, the data is probably wrong, but let's say it's not) 25F, that's 59F, 1533 DPS, with 59+20=79F it's 1146 DPS, thus moving it from "good to DPS with and save some PP" to "useless shit, use only because you have to switch weapons", which is pretty sad.