Wireless Encryption Methods (eg; WPA2) vs Forced Secure Proxy Redirects


I have noticed recently that most cafés which offer Free WiFi do so,
not with a Wireless Encryption Method (WEP, WPA, WPA2, LEAP etc.) but
with a Forced-Proxy Redirect. (usually https with 128-bit encryption)

(I'm sure there's a better way of saying 'Forced-Proxy Redirect'...)

What are the Security implications of using the Forced-Proxy Redirect
method rather than a Wireless Encryption Method?

Does the traffic still get tunnelled securely?

What are the advantages & disadvantages when comparing these two Design choices?

Please alleviate my concerns.

Thanks in advance,

Chip D. Panarchy

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