Not the most well known vendor, if you test it and it works perfectly it might be ok. Otherwise Id go with one of the better known more popular brands with likely better support. The latest models with DisplayLink 5900 chipset will drive one 4k/2k monitor or two at a lower resolutions (dual displays up to 2048x1152).
Update:
http://www.displaylink.com/shop/new_products.php
Look at the 4k capable models, these use the DL-59XX chipset.
More vendors will be releasing products, expect to see Targus, Pluggable, Cable Matters, etc.
StarTech model with DP and HDMI
http://www.startech.com/Cards-Adapt...op-docking-station-with-4k-video~USB3DOCKHDPC
DELL model with DP and 2x HDMI.
http://accessories.us.dell.com/sna/...&cid=281056&lid=5327799&acd=12309204758460815