Travelling on B1/B2 while having valid H1B visa stamped

[NRV]

I work for company A in India (Have valid B1/B2 visa), Company B in US has sponsored my H1B and stamping is also done in last month. I have not put down my papers in company A and they want me to travel to US on B1/B2 visa for 2 weeks for business meetings.

I will come back to India after 2 weeks and will go on H1B after couple of months.

Is it possible for me to travel to US using B1/B2 visa while having a valid H1B visa too ? are they implications here? 

Any help is greatly appreciated.