Is it possible to attach two monitors to a MBP using a displayport splitter?

Hello community!
I have done quite a bit on research on this, but haven't found any recent and conclusive answers. My hope is to find a solution and have it documented for others seeking the same.
Goal
I want to attach two external monitors to the miniDP/Thunderbolt port of my MacBook Pro using a DisplayPort (DP) splitter.
Hardware
Macbook Pro, mid 2012 (non-retina), with NVIDIA GeForce GT 650M, Mavericks
2x DELL U2412M that support DVI,VGA or Displayport.
What I know
My MBP should support more than two displays
There is a workaround using a USB adapter (my last resort)
There are Thunderbolt "Docking Stations" (e.g. from Belkin) providing several outputs, but don't know if any supports more than one display
DP supports multiple displays as of rev. 1.2 (daisy-chain)
The U2412M
(supposedly) supports DP rev. 1.2
works when attached with DP (tested on both units)
Thunderbolt is backwards compatible with DP (I think the DP signal is multiplexed on a thunderbolt connection)
I found a DP-splitter supporting multiple displays. However, Delock's support could not confirm it working with my MBP (they have no test units)
What I tried
I purchased the DP-splitter and tried to connect both displays to the mac.
Result
While there is a reaction initially, both monitors go into standby.
If I connect only one display to the splitter
DP: works
mDP: Laptop display goes black several times (I suppose OS X is attempting to set up the display), before defaulting to the buildin screen only (Note: Connecting the mDP<->DP cable directly works)
MBP cannot boot if both displays are connected with splitter as WindowServer crashes (there are crash logs, if that would help)
It's possible, that the splitter's mDP port is defective. "My" store suggested bringing it in for replacement. As they are out of stock, however, it'll take a while for a replacement to arrive.
Question / tldr
Has anyone successfully connected two displays to a single mDP/Thunderbolt port without using thunderbolt?
What DP revision does the thunderbolt port support?
Is there anything else I could try?

Melophage,
Thanks for pointing out the PowerDesk software.
For the benefit of any other readers, here's a rough outline of it's functionality:
Divide 'virtual' desktop into sections. (allows maximising to both screens, a single one or even a division of a single screen)
Assign dock to a particular display (or span)
Swap active window and maximize it
Alas, there seems no way to assign the menu bar to a single display.
Quite interesting is the ability to divide a screen's desktop into sections. Applications can then be maximised in these sections, allowing for a "mission control" setup, where you can monitor several applications at once.

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