|Indeed I know of people having tried truck grinds on vert and on street obstacles and there are probably many roller skaters who did such things and I don't know about it.
You can see some tricks like this here in the video section, e.g. from biffsk8er:
(When searching the videos I noticed that their display was broken and fixed it. If you notice something is broken on this site, please tell me!)
Ther pictures section seems to be also broken. Keep nagging me to fix it. Now I have to go to bed.
: BTW I saw a picture of you on those skates with wooded deck, that's super sick! how do you call these things? I am pretty sure I saw someone skating this in the 90's somewhere, could have been you maybe??
Maybe you mean Holger Sander like on this picture?