I mean if you aren't trialing the software, why aren't you paying for it? You've even put 'trial' in quotes, so we know you aren't really trialing it. You're simply using it.
Are you in compliance with the 1Password licence to use it long term for business without paying for it? (I don't know the answer to that)
We share all our documents (financials, cap table, etc) with all our employees, making sure an employee cannot be social engineered is key.
Plus, to be honest, using 1Password is easier then remembering passwords.