Hey Hans! There has not been development of my VSTs in a long while. And to be clear, I am NOT associated with freeverb. But the algorithm in [gverb~] is the same as the VST plug-in, but without all the controls. It basically initializes as the default preset and lets you change the reverb time. Sorry if that won't work for your current application.
My recent work is focussed on a re-birth of the granular toolkit within Jamoma: