I found this term in the following sentences: Neuro Linguistic Programming -not the most catchy name for what is a very powerful and rapid way to create positive change in your life. It's not all beards and sandals. Honest. NLP is based on three simple principles for success.
I think it's referring to a hippy/laid-back/alternative/rather vague mentality. So, if it's not "beards and sandals" - it's legitimate/respectable/scientifically proven, etc.
Here is another passage in which the term 'beards and sandals' is used.
"... in saying the Liberal Democrats were formed from the remnants of the Social Democrats, you neglect the once great Liberal party, last in office during the first world war. Charles Kennedy was from that side of the party, if I'm not mistaken. They had a reputation for unrealistice idealism - b