We may need another way to engage with partners, service providers, contractors, etc. We can't totally see what the future looks like so are operating under the assumption that it'll be in the company's interest to hold some tokens on reserve. The reserve tokens are held in a multi signature wallet that requires confirmations from several AirSwap stakeholders, including ConsenSys.
You should be using your own tokens to bring on future shareholders and partners. The same as any other business owner has to give away their shares to expand the company. Just be up front and say you're keeping 50% of tokens and investors will be less skeptical.