Searching for contact details vs searching for leads details

Hi All,

If I were to receive a business card from 'Mr Jo Bloggs' and add this as a 'Lead'

When I come to search for Mr Bloggs details, would I need to search from within 'Leads' or can I get it to appear even though it is a contact?

I understand that when you create a Lead that it does not create an account or contact until you have qualified the details but I am wondering if this means that I would need to search for Mr Bloggs under 'Leads' and 'Contacts' as I may have forgotten where I added them.

Any one know if it is possible to search in one box across both 'Leads' and 'Contacts' and why this might not be good practice?

Thank you!