There is a race series in UK that the 'Glamis' may fit into...
2013 UK SCT Nationals are running an SCB (Short Course Buggy) class this year, the Glamis dimensions fit the bill.
As long as it runs SCT type wheels (which it looks likes its ok from pics) then it should be able to run.
The Twin Hammers does look like fun, more 1/10th scale sized, definitely needs to be used somewhere dusty to get effect!
Must say their range does look really sweet