I have a couple Sportkilts, They were the first kilts I ever got. But while a SK is great for knocking aroung the house, I'm wearing one right now, or sporting activities, I would strongly recommend the USA casual for your purposes.

USA's PV is a much better kilt material for everyday wear than the cotton stuff SK uses. To put in a dollars and cents perspective, a USA casual, made to fit you, is about $110. A SK basic is $70 - $80 plus $12 if you want belt loops, another $12 for sewn down pleats, ( a must) , things that a USA casual has standard. Save your pennies and go with the USA, you won't regret it.