Hi Geoff
The cynics I know of are comparing what lobsang claims and what is in actual fact specifically in the realm of buddhism. Some of the books claim to expound what is buddhist but clearly is not for those that have studied it. It may have many parrelels to western esoterica however. There may be some truths in the books but thats not to say all of it is. I'd say to H to decide if faith alone is enough or would some investigative study into pure sources of buddhism be needed to make a well informed judgement. They are novels, enjoy them for being novels.
my 2 cents :)
lion