the approach above the glide in IMC is a recipe for disaster due to the false glide scenario and the increased descent angles involved.
Whether to capture it from Below or from Above in IMC, it still can be a recipe for disaster if Distance to Threshhold is not veryfied
by Height (HAT in thousands of feet) multiplied by GS angle, and in any case at OM pos plus at Minimums. (One mum here is not always inough)
For example at airport with elev of 2000 feet, 9 NM from Threshold, if you are 5000 feet,
3*(5000-2000)/1000 !! You are on GS. Any mile less or more and at least you know where you are.
Beside there is no 100% guaranty you will get GS at all, so BE prepared with LLZ ONLY app minimums.
Have a nice day !