This scenario presupposes the current "Ric" developments not happening.
Imagine that Nightwing is in hot pursuit of a dangerous supervillain (take your pick) who could, within minutes, bring destruction to Gotham City. Gotham's other defenders from Batman aren't down are occupied and out of contact, and it's up to Dick to locate and subdue or at least hold the fort against this supervillain until help arrives.
Problem: Dick's Nightwing suit is completely shredded from his first encounter with the supervillain. There's not much left of the suit that's wearable.
In a bag nearby, however, is the last Robin suit that Dick wore before he made the switch to Nightwing. It is in perfect condition, still fits him, and comes with a fully equipped utility belt.
Under such conditions, what is Dick most likely to do?
1. Just go pursuing the supervillain buck nekkid.
2. Go into the nearest clothing store and borrow some civilian clothes temporarily..
3. Swallow his pride and put on the Robin costume one last time.