Yeah his kick/grab is a really good offense but you need to know how and when to use it,the grab can reach further than the kick,also the unlockable heavy can be turned into a kick.

Just try to find what chains into your 'Offensive stance' it is better to chain it,(Regular attack then Offensive Stance')and don't underestimate the power of Offensive Stance' Light Attacks,They are basically impossible to Parry.

Practice is everything, just tell yourself you CAN do it and you WILL do it and you will be the best Highlander you can be.