Hi Siuwan and welcome to Shuttertalk! A tripod or monopod holder would have been great wouldn't it?

I think Rob mentions towards the end of the article:
My monopod did not fit on or in the T-214 at all. I tried to jerry-rig a couple of connectors to strap it to the bottom - but I wasn't satisfied with any solution that I came up with. In all fairness though, that sort of carrying capacity would probably fall in the realm of backpacks.

So my guess is that it probably can't be done, in an elegant way at least.

Thanks for the question!
Jules