Title says it all really.
Totally unnecessary. You get +2 Dex at L8 which means you get +1 Parry then too. Also, if you look at the skill bonuses for the perk they're to cross-class skills. A fighter gets Parry as a class skill, and there's some very good gear ingame. It's not difficult to get very high numbers without having an additional bonus.
And this is coming from the insano parry fighter so...
I would like to know how many options are available for parriers not using rapiers/daggers? I'm familiar with gloves and leather armor that's pretty substantial. Are there other weapon types with those bonuses?
It may be a possibility when I look into the different backgrounds again.