The Financial Post reports in its Thursday edition that while strong day-one sales of the BlackBerry Z10 in both Canada and Britain do not exactly point to a positive trend given the relatively small size of these markets, the Street seems to think some credit is due to the embattled smart phone maker. The Post's Jonathan Ratner writes that in addition to promising initial results at the retail level, RBC Capital Markets analyst Mark Sue noted that Research in Motion is also getting many upgrade requests from enterprise clients. "There appears to be meaningful enterprise demand for BlackBerry Z10 and Q10 among existing diehards and even iPhone and Android users," he told clients. "Enterprise upgrades may be delayed several months, given enterprise testing and certification, but RIM's free software upgrade (to BES 10) and early training may accelerate the process." The analyst noted that both finance and government verticals plan to use BES, although other non-regulated industries may use Microsoft ActiveSync. He also suggested that since BBM and SMS archiving is currently unavailable, initial BB-10 uptake may be delayed among some users. Several stores were sold out of the device by the end of its first day.