To my eye often Black Watch kilts seem pleated to the horizontal "line" as the thin black stripe it is really pleated to does not stand out against the stronger horzonal effect of the pleating- and looks good. I had my Graham of Montrose (modern) pleated this way and now realise why people ask me if it is black watch, from behind there is no white stripe and the horizonatal green,blue and black do look similar. I must say that the phrase Lawn Chair look has the implication of inferior pleating style which I do not think is warranted in all cases, the pleating effects are really dependant on the tartan some look good pleated to the "horizontal line" effect and some less so I believe that if you like the look of pleating effect in your kilt you should not be swayed by so called "rules" of correct looks. That said I do value the advice of my kiltmaker and consult them on questions such as these.