Yes, I regularly run Skroxigor units in a supporting role. They usually have the unenviable task of finding the nearest unit of cavalry or big gribbly and making a beeline towards them in something I call "Operation Tarpit."
However, with the preponderance of Monstrous Cavalry recently, specifically Jugger Knights which I am likely to face often, Skrox just don't cut it. The beauty of Skrox is that they maintain a fine balance between dying in droves, whilst being cheap enough to still out rank Knights as the Kroxigor slowly whittle them down one or two models at a time. That balance is thrown all out of proportion against MC because they simply lose too many models to the sheer number of attacks, whilst not doing enough wounds to reduce the attacks back.
In short, I need to switch up my tactics and in Warhammer, if you can't beat them - redirect them. Cheap, 50 point redirectors seem ideal; but are they worth it?