Garry,
First off, let me say I have no knowledge of VEOS other than what I just read for 30 seconds on the Matrox website - it is a digital signage product.
Powerdesk / GMX for the Analogue and Digital TripleHead
2Go products offer no form of image rotation, which I beleive is what you mean by "pivot". Monitors connected to a TripleHead
2Go must be run in landscape configuration.
Powerdesk / GMX also offer no methods for custom resolutions. You can see in
this post all of the resolutions available to use with the Analogue and Digital TripleHead
2Go; since these are the only resolutions that can be used, you can see that no portrait monitor resolutions are available and no custom resolutions are available.
I would imagine that Matrox might use capabilities developed for VEOS in the next iteration of their TripleHead
2Go product, but VEOS is not a consumer-grade device. It is an industrial product designed for large building applications and I'm sure it has a price to match. It dens video signal via coax cable, not VGA or DVI.