I don't think this would be a good idea. Some people have reported the need to take more over time to get similar effects. I hear where you're coming from on this one. I've been in the same situation. You go out and you just don't know if you're going to get some or not. But the good thing is that the effects of cialis are like two days. If I'm going to go out for the weekend. I take like 40mg Friday night and I'm good until Sunday.
What I find odd is that prior to it's official launch claims were being made by Lilly that the 10mg tabs were designed for continuous daily dosing while the 20mg tabs were for pre-sex viagra style usage.
now that it's actually available the product insert clearly states do not take everyday.
perhaps they have discovered a tolerance to it quickly develops, if they have they are obviously going to keep quiet about it.