Your answer is to definitive, it will lead someone into a false sense of security.
A more accurate answer would be - probably not. Blizzard state in their terms and conditions that all accounts with associated payment and contact details can and will be banned. I personally have had a number of botting accounts banned but non-botting accounts on the same battle net login were not banned. And, I've had non-botted accounts banned also.
When it all comes down to it Blizzard are the only one who can accurately answer this. The gambling rule of thumb "never bet what you can't afford to lose" is applied to botting.
While your non-botted account is probably safe there is absolutely no guarantee.