Here are the metrics:
Probability of Profit: 35%
Max Profit: $413/contract
Max Loss/Buying Power Effect: $387/contract
Break Even: 112.13
In this particular case, you actually receive a small credit for the setup ($13 at the mid price).
Notes: Here, the probability of profit is somewhat horrid. However, in this particular case, I take it with a grain of salt, since I not only have a firm directional bias in FXE/EURUSD, I regard the 112 to 112.50 area in FXE (comparable to 1.1450-1.500 in EURUSD ) as long-term resistance from which it has repeatedly retreated. That being said, in the event I am "somewhat wrong" as to my timing, I'm opting to go farther out in time to give the trade time to develop and to not only the Brexit vote, but also a possible FOMC June rate hike, which will strengthen the dollar and cause EURUSD and FXE to fall.
The ideal outcome is for price to finish below the 108 short put at expiry, but I would look to take the entire setup off as a unit for some significant percentage of max profit ... . Naturally, it is also possible to strip off the debit spread (assuming it moves into profit on a break of the 108 short put) first, allowing the short call credit spread to expire worthless if that scenario comes to fruition prior to expiry.