Shifter Lines 105: Who is Phistomefel? Can We solve this Sudoku Without Him?

Today's Puzzle:

Another excellent puzzles in the series from gUBBLOR. As I know some of you struggle with the Phistomefel logic, I deliberately set about solving this incredible puzzle without it.

Link to Play Along:

Shifter Lines 105: Phistomefel? Who's that?! by gUBBLOR http://tinyurl.com/SudokuSleuthShifterLines105

Rules:

Normal Sudoku rules apply. Place the digits 1 through 9 in each empty cell. Digits must not repeat within the same row, column, or box.

Shifter lines: Adjacent digits within the same box on a shifter line share both parity (even/odd) AND polarity (low/high). Whenever the line enters a new box either the parity OR the polarity shifts, never both. Shifter lines can never have 5 on it. Digits may repeat on lines.

Kropki dots: A black dot between cells indicates cell values with a 2:1 ratio. A white dot between cells indicates cells with consecutive values. Not all dots are shown.

XV: Adjacent cells connected with an X must sum to 10. Adjacent cells connected with a V must sum to 5. Not all X's or V's are shown.

Even/Odd: Cells with a filled square must be even. Cells with a filled circle must be odd.