Thanks for welcoming me I guess that I am not standing up because the BikeErg measures my performance every single pedal stroke. I cannot relax for even a split second without a significant drop in watts, just like the rowing machine, or the feeling of riding a bicycle up a very steep hill. I think this is a great feature, and keeping rpm/watts steady is quite difficult even when sitting down.
I have now had another session on the BikeErg with the nose-less saddle (an ISM), and I think something like that saddle would be my recommendation for people who want to try something different.