Has anyone piped flowers with marshmallow frosting? I've heard of someone that piped flowers using a Russian piping tip,  using the egg white and sugar mixture, only, that is used before you make Swiss meringue buttercream frosting. What she did was heat up the sugar and the egg whites over a double boiler and then beat it till cool. Then she stopped at that point without adding the butter like in a Swiss meringue buttercream frosting. Has anyone done this before? I would like to give it a try but I feel that the marshmallow "fluff" would be too soft to actually pipe flowers especially with Russian piping tips. If anyone has had experience with this and can give me some helpful tips I would appreciate it.

Thanks in advance for your help! 

This is done with meringue.  It takes a little bit of shape.