Maybe a misunderstanding, this discussion is intended for those who prefer the flexibility of accessors and are in favour of the neat syntax of lvalues.
Me, I certainly don't want to get into any direct access discussion.
UPDATE: I suppose with "direct access" something like $obj->{attr} is meant.
UPDATE2: Anyway I already studied this Experimenting with Lvalue Subs, but couldn't find a discussion about speeding up tie, only about reimplementing lvalues.
UPDATE3: Let's try to collect some threads:
... to be expanded
searchquery: ?node_id=3989;BIT=%27%20lvalue%20%27%20tie%20%27;BIS=%20%27
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