the problem with the effects above, is that some (or most) are not supported in the print workflow.
scribus has the policy not to risk to mess your text with fancy effects if they're not directly supported by the print workflow.
you can see it that way: if the PDF format does not support 3D transformations on glyphs, there are few chances that scribus will support it.
other softwares have different policies, and some of them are a real headache for printers!
and for the practical part, that is achieving your goals, you can convert the text to outlines transform them to have a 3D effect or apply a gradient.
hth
a.l.e