Remember, you get what you pay for. If the person is knowledgeable and helps you get the products that work with your systems, delivering the bells and whistles you and your customers want, that is great. If they're selling a particular vendor out of the box, I'd be skiddish. Networking with your peers here will help in all these areas whether you want to use a consultant or not.
For privacy concerns, this may be a topic better discussed in private or one on one in private messaging with those ready to share with you.
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AndyZ CRCM
My opinions are not necessarily my employers.
R+R-R=R+R
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell